Cracked screen for 52 in hitachi rear projection tv

I purchased this tv brand new in november of 07 and my three year old cracked the screen. It is in the middle of the tv and is approx seven to eight in. long. Can I purchase a replacement screen? Any info will be appreciated. Thanks. Hey there... never tried this, but it was the most logical hit on GOOGLE. I bought my son a slingshot with specific instructions on where he was to use it. Well, needless to say, the Protective Plastic Cover is cracked right in the middle (BULLSEYE!). Where can I get a replacement or any recommendations on who to call (other than GhostBusters)?